J45.40
Moderate persistent asthma, uncomplicated
Diseases of the respiratory system Billable
Quick Reference
Asthma with daily symptoms requiring daily controller medication
Clinical Information
When to Use This Code
Asthma with daily symptoms requiring daily controller medication
Common Clinical Scenarios
- Moderate asthma on ICS + LABA
- Daily asthma symptoms
- Multiple rescue inhaler uses per week
- Asthma limiting activities
Documentation Requirements
- Document symptom frequency (daily symptoms)
- Record nighttime awakenings (>1x/week)
- Note controller medications (ICS, LABA, LTRA)
- Specify FEV1 60-80% predicted
Coding Guidelines
Inclusion Terms
These terms are included in this code:
Moderate persistent asthmaModerate asthma without exacerbation
Exclusion Terms
Do NOT use this code for:
- Mild asthma (J45.30)
- Severe asthma (J45.50)
- Asthma with exacerbation (J45.41, J45.42)
Coding Notes
Based on NAEPP severity classification
Use J45.41 for moderate persistent with exacerbation
Step 3-4 treatment typically required
Related ICD-10 Codes
Consider these related codes based on patient presentation:
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Code
J45.40
Category
Diseases of the respiratory system
Billable Status
Billable
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